Forging machine



July 27 1926.

W. H. WINEMAN FORGING MACHINE o i 1 Filed June 7, 1917 Patented July 2'7, 1925.

UNITED STATES WADE H. WINEMAN, OF CHICAGO, I ILLINOIS, ASSIGNOR TO SULLIVAN MACHINERY 1,593,859- PATENT @FHCE.

COMPANY, A CORPORATION OF MASSACHUSETTS.

FORGING. MACHINE.

Application filed June 7, 1917, Serial No. 173,380. Renewed February 20, 1924.

My invention relates to forging machines It has for its object to provide improved operating and improved controlling mechanism for such a machine, especially adapted to use in connection with those machines used in the manufacture or sharpening of drill steel. More specilicially, my invention has for its object to provide improved means for operating the clamping mechanism of such a machine whereby the same is moved to and from clamping position, and improved controlling means cooperating there with whereby the several cooperating mechanisms of the machine are interlocked in such an improved manner as to increase the safety of the operator. These and other objects of my invention will, however, hereinafter more fully appear.

In the accompanying drawings, 1 have shown, for purposes of illustration, one embodiment and one modification which my invention may assume in practice.

In these drawings,

Fig. 1 is a side elevation, partially in section, of a forgingmachine equipped with my improvement, the controlling lever being shown in a plurality of positions.

Fig. 2 is a detail vertical sectional view taken on line22 of Fig. 1.

Fig. 3 is a vertical sectional view taken on line 3-3 of Fig. 1.

Fig. 1 is a detail horizontal sectional viewtaken on line 4t of 1. with, parts broken away to show details-of construction.

Figs. 5, 6, 7, and 8 illustrate the several steps in the removal of a dolly.

Fig. 9 is-a detail view showing a modified form of wedge mechanism.

In this illustrative construction, I have shown a forging machine ofthegeneral construction described and claimed in my copending application Serial No. 84,960, liled Mar 17, 1916. As shown, this machine comprises a base 1 having mounted thereon a stationary clamping-die 2 and. a movable clamping die 3, the upper die 3 being carried by a yoke at connected through spaced vertical rods with a lower crosshead6. illustrated, this crosshead 6 is connected to and operated by,. through mechanism here inafter described, a pressure fluid operated horizontally moving piston 71 carried in a suitable cylinder, th connection being such thatas the piston is reciprocated the cros head is raised and lowered to raise and lower carried at the front of the frame 1, and an.

upper reciprocating swaging die 13 mounted on a suitable.standard 14. extending above 7 the frame and carrying a pressure fluid swaging die operating motor 15 of the same general. construction as the motor 8.

As in the construction mentioned above, air is supplied to the motor piston 7 through a pipe 16, the air supply being controlled by a well known valve mechanism indicated at 17, in turn controlled through a reciprocable spring pressed link connection 18 and a pivoted hand lever 19 disposed at the front of the machine. As heretofore, this valve mechanism 17 is preferably also connected through a pipe connection 21 and controls the piston 9 of the motor 8, the arrange ment being such that when the lever 19 is moved in a downward. direction from its open upper dotted position shown in Fig. 1. to the full line position shown therein, the valve mechanism 17 acts successively to set the clamping and upsetting motors in operation. As illustrated, air is also admitted to the swaging motor 15 through a. pipe connection23, and this motor is so controlled that it may not be set in operation while the upsetting operation is taking place. As shown, this controlling mechanism includes suitable valve mechanism having a control ling member 24 operated through vertically disposed link and spring connection 25 which is, in turn, connected to a pivoted foot lever 26 mounted upon-a rock shaft 27. As shown, the foot lever 26 has an upstanding arm 28 provided with an extension 29 on its end adapted to extend into the path of the lower end of a link 30 which moves in a guide 31 on the frame and is pivotally connected at its upper end to the hand, lever 19. Thus, it will be noted that, as in the above mentioned construction, means are provided whereby by manipulation of the lever 19 the fit (ill

work may be clamped between the dies 2 and 3 and upset by the action of the dolly 11, and thereafter released and subsequently swaged between the dies 12 and 13, or alternated between the upsetting means and the swaging means, as may be necessary, the several mechanisms being controlled through the interlockingcontrol hereinabove described, 29, etc. in such a manner that the upsetting mechanism may not be set in operation until the clamp is closed, and the swaging mechanism may not be operated while the upsetting mechanism is in use, or vice versa.

In my improved construction, it will be noted that the rod 32 of the clamping die operating piston 7 carries on its front end a wedge member 33 having near its front end oppositely inclined, converging, upper and lower wedge surfaces 35, 34, and a relatively flat end surface 36. Of these surfaces, the lower surface 34 engages with a corresponding surface 37 formed on the crosshead 6, while the upper surface engages with a corresponding surface 33 formedon a cooperating wedge member in the form of a longitudinally disposed reciprocable block 39 which block engages and is guided by an abutment or guiding surface 39' on the frame whereby the portion of the frame on which the surface 39 is formed constitutes an abutment or guiding member. Thus, it will be noted that as the wedge is moved toward the front of the machine, i. e. toward the operators position, through the pressure of the surface against the surface 37, the crosshead 6 will be depressed in such a manner as to lower the yoke 4, and therefore the upper clamping die 3, and bring the latter into clamping position over the lower die 2. the wedge 33 moving the member 39 bodily forward with it and the two coacting as a single wedge of a less angle with the horizontal surface 39' on the frame and the inclined surface 37 on the crosshead to force the latter downward. In order to provide for the return of the member 3 to its up position. I have provided a member 40, preferably in the form of a bell crank lever, pivoted at 41 on the frame and having a plurality of upstanding arms 42 disposed on the opposite sides of the piston rod 32 and engageable with rollers 43 carried at the sides of the wedge 33. It will also be noted that this lever is provided with a single lower, forwardly extending arm 44 having a cam-like surface 45 on its extremity extending beneath and engageable with a buffer or reciprocable plug 46 movable vertically in a chamber 47 in the crosshead 6 and against the tension of a coiled spring 48 housed in that chamber. Thus, it will be evident that as the wedge 33 is ret'acted, the rollers 43 will engage the arms 42 and thereby swing the member 40 about its pivot and operate the arm 44 in such a manner as to elevate the crosshead and release the clan'ip. Through the provision of the cam surface 45, the member 46 and the spring 48, it will also be evident that a certain amount of re siliency is obtained tending to absorb the shock.

It will be noted that the cooperatingwedge member 39 is slightly longer than the member 33, and that it has at its rear a shoulder 49 which overlaps the rear end of the member 33, and a front shoulder 50 which overlaps the front end thereof. which shoulders 49 and 50 are spaced slightly further apart than the length of the member 33, whereby there is possible a slight relative movement between the two 111631lbers. In order to hold the wedge member 39 normally to the left 01' rear with respect to the member 33, springs 51 have been interposed between the shoulder 49 and the rear surface of the wedge 33, which spring are herein shown seated in suitable cavities in the rear end of the latter. It will also be observed that, while both this member 39 and the wedge may be guided in plane ways formed on the frame in such a manner as to insure the desired free movement thereof, the same are shown herein to be guided by guides 52, 53. Attention is also directed to the fact that, as described in my previous application, lubricant may be supplied to the air supply for certain of the motors and collected from their exhausts in suitable chambers 54 in the frame and thereafter passed down through suitable ports 55, 5b in the bottom of those chambers communieating with the cooperating guiding surfaces on the member 39 and the frame. As shown herein, the member 39 is provided with cooperating ports 57, 58 adapted to permit this lubricant to pass down to the upper surface of the wedge in such a manner as to maintain the latter properly lubricated. A! tention is also directed to the fact that. here in, the lower surface of the wedge is sup plied with lubricant from the upper surface thereof through suitable means herein shown to comprise a duct 59, and that lubricant is also supplied, through suitable passages communicating with the duct 56, to the lower surface of the wedge and to the lower vertical surfaces of the crosshead.

It will also be noted that the crosshead 6 has connected thereto a depending strip 60 having an angular forwardly disposed lower end 61, and that this end is pivotally connected, as through a short link (32, with a rearwardly disposed elongated arm of a bell crank lever 63 pivoted on the same pivot as the lever 26 and extended through a suitable opening in the frame 1, this lever 63 having a laterally disposed portion 64 adapted to extend into the path of the meml'li ber,30 and cooperate with the controlling mechanism in a manner hereinafter more fully brought out. It will. also be noted. that in my improved construction the dolly 11 is mounted in a suitable guide 65 and is normally held against vibration by means of a pair of oppositely disposed springs 66 suitably connected, as at 67, to' the horizontal motor frame or cylinder, and having their front ends 63 attached to the dolly, as by having the same seated in holes therein, suitable coiled portions 69 being provided intermediate the ends of these springs in such a manner as to absorb vibration and nor mally tend to hold the dolly in the desired position with respect to the work. It will. also be noted that, as shown in Figs. 5 to 8, the dolly l]. is provided with a vertically disposed aperture 70 in. its upper surface communicating with the rearwardly leading aperture 71, which receives the front end of the striking pin 10, and that I have shown therein a dolly removing pin 72 adapted, when needed, to be inserted through this opening 70 and cooperate with the dolly in such a manner as to enable the latter to be readily removed from the end of the pin 10.

In describing the operation of my improved mechanism. let us assume that the parts are in the working or full line position shown in Fig. 1. In this position, the steel is clamped between the dies 2 and 3, the crosshead 6 being in its depressed. position due to the coaction of the wedge members 33 and 39, acting as a, single compound wedge member. with the stationary surface 39 and the surface 3'Tof the crosshead. As usual, the horizontally disposed motor will then also be operating upon the dolly 11 to upset the work clamped between the dies 2 and 3. It will fu'rtherbe noted that while the work is thus clamped between the dies 2 and 3, and while the dolly is operating, the vertical motor 15 of the swaging mechanism is held inoperative due to the disposal of the lower end of the link within the path of the extension 29 on the swaging motor controlling foot lever hen it is desired to release the clamping dies, this is readily accomplished in the usual manner by a movement of the lever 19 in the reverse'direction through its intermediate dotted position shown in Fig. 1 to its open or upper dotted position shown therein and the consequent successive movement of the valve mechanism 17 to shut off the dolly operating motor 8 and to reverse the movement of the clamp operating motor. As the piston 7 starts to move backward, it will be clear that the force required to break the gripping action between the surfaces 34. and and the surface 37 on the crosshead and the surface 38 on the member 39 will be much less than would be required were the members 33 and 39 integral and were initial slipping to have to take place between the surface 39 and the top of the member 39 and the surfaces 34 and 37. This will be clear when it is remembered that the force necessary to dislodge or loosen. a thin wedge is much greater than would be required to loosen a relatively thick wedge. Accordingly, the initial movement of piston 7 will cause the wedge 33 to pull from between the surfaces 37 and 33, which it can do without moving the member 39 by compressing the springs 51. As soon as the member 33 has moved even a small amount there is clearance between the member 33 and the surface 38 and between surfaces 34 and 37, and the pressure between the member 39 and thesurface 39 being removed, the member 39 may slide freely and will be restored to its initial or rearward relation to the member In wedging, the members 33 and 39 cooperates a single member, the re sultant wedge being of a relatively small angle and being bounded by the horizontal. surface of the member 39 which cooperates with the surface 39 and by thesurface 34 whiclrcooperates with the surface 37. on releasing, the releasing action is between surfaces 34 and 3?, and 35 and. 38, i. e. a much thicker wedge, and so the grip of the parts can be broken quite readily due to the greater angle at which the surfaces lie.

In the backward movement of the piston 7 and the wedge 33, it will also be noted that the rollers4 3 on the wedge will engage with the arms 4-2 an the bell crank 40 and thereby positively raise the arm 44; of that lever in such a manner as, through the cam' surface 4-5, to lift the plunger 46 and compress the spring 48, and thereby, through this intermediate resilient connection, raise the crosshead and the movable clamping die 3. When this die 3 is in its raised position, it will, moreover, be noted that the arm 31 movable with the crosshead will be elevated to its uppermost position in such a manner as, through its link connections, to have raised the arm 63 to its uppermost position wherein the portion 64 thereof is disposed substantially beneath the lower end of the rod 30. In this position, the lever 26 may be depressed to operate the swaging mechanism, but the hand lever 19, although free to have a limited downward movement to its middle or lower dotted position shown,

to operate the clamping mechanism, may not be depressed to operate the upsetting or horizontal hammer until the clamp has been operated, thus preventing any accidents which might occur by reason of the'operation of tl e upsetting mechanism while the workiis lobse in the clamp, It will also be noted that this member 63 does not move out oflthe path of the member 30 until the clamp has entirely closed so that the upsetting mechanism may not be operated atany time until after the closure of the clamp.

In the use of my invention, it will'be obvious that through the provision of the springs 66 the dolly 11 will be held against vibration, the springs normally tending to hold the same in the desired position with respect to the work. It will also be evident that by simply pulling out the ends 68 of the springs, the dolly may be readily removed, as for instance when desired to substitute a dolly of a different type. In the process of removing the dolly, it will also be noted that by inserting the pin 72 in the hole 70 in the dolly block, the latter may be readily JGIDOVGCl from the pin 10, the block first being moved from the position shown in Fig. to the position shown in Fig. 6, wherein the pin 72 may drop down into the opening 71, and thereafter reciprocated in the opposite direction in such a manner as to force the pin back into its retracted position as shown in Fig. 7, whereupon by simply moving the dolly forward the same may be readily lifted out. (See Fig. 8.)

In 9, I have illustrated a modified form of the wedge construction shown in Fig. 1, wherein it will be noted that no intermediate member such as the member 39 is provided between the wedge 73 and the upper surface of the wedge chamber, guides 74 and 75 only being provided above and below the wedge in the walls of the wedge chamber so that the wedge is guided directly by the chamber. It will also be noted that in this construction the wedge is not provided with an upper inclined surface corresponding to the surface 34, the same instead having only a single lower inclined surface 76 cooperating with a similar surface formed on the crosshead 6. However, in this construction the wedging and releasing connection is provided in the form of a block 77 pivotally connected through a link or toggle 78 with the wedge and normally held in a predetermined position by a spring 79 acting upon a rod 80 carried by the wedge and extending through the toggle connection 78. In this construction, when the wedge is moved to its forward or clamping position, the crosshead 6 will obviously be depressed in the same manner as heretofore described, the block 77 being simultaneously moved into clamping position by the toggle 78. When, however, the wedge 73 is re tracted, the toggle 78 will be broken in such a manner as to relieve the pressure of the surface 76 and permit the wedge to be readily withdrawn.

While I have in this application specifically described one embodiment of my invention and one modification of the clamp ing mechanism, it is to be understood that the invention is capable of being modified and embodied in various other forms without departing from its spirit, as it is my intention to include all such modifications within the scope of the appended claims.

hat I claim as new and desire to secure by Letters Patent is:

1. In a forging machine, clamping mechanism including reciprocable member, a guide o alimtinent member, a reciprocating clamp operating element. there being means for reciprocatingsaid first mentioned member including cooperating inclined surfaces on said element and on one of said first mentioned members, and means for facilitating the freeing of said surfaces upon reversal of said element.

52. In a forging machine, clamping mechanism including a reciprocable member having an inclined surface formed thereon, a reciprocable wedge member cooperating therewith and having a plurality of inclined surfaces one of which cooperates with said first mci'itioned inclined surface, and a member having a surface parallel to the line of reciprocation of said wedge member, and a surface parallel to the other surface of said wedge member, said third mentioned member being movable bodily in fixed relation to said wedge member during wedging movement of the latter and having a delayed movement with said wedge member upon the retraction of the latter.

I). In a forging machine, clamping mechanism including a reciprocable member having an inclined surface formed thereon, a reciprocable wedge member cooperating therewith and having a plurality of inclined surfaces one of which cooperates with said first mentioned inclined surface, a member having a surface parallel to the line of reciprocation of said wedge member and a surface parallel to the other surface of said wedge member, said third mentioned member being movable bodily in fixed relation to said wedge member with its inclined surface in contact with the second mentioned surface of said wedge member during wedging movement of the latter and having a delayed movement with said wedge member upon the refraction of the latter.

4-. In a forging machine, clamping niechanism including a reciprocable member having an inclined surface formed thereon, and wedging means cooperating therewith and comprising a multipart wedge member having the parts thereof engaging, during wedging movement thereof, along a plane making an'acute angle with the inclined surface of said first mentioned member, said angle being greater than the angle made by said inclined surface and the line of movement of the wedge.

5. In a forging machine, clamping mecha' nism including a reciprocable member having an inclined surface formed thereon, and wedging means cooperating therewith and comprising a multi-part wedge member having the parts thereof engaging, during wedging movement thereof, in a plane makingan acute angle with the inclined surface of said first mentioned member, said angle being greater than the angle made by said inclined surface and the line of movement of the wedge, and said wedge having its parts relatively movable whereby said parts separate at said plane upon initial rearward movement of said wedge.

6. In a forging machine, clamping mecha-. nism including a reciprocable member having an inclined surface formed thereon, wec ging means cooperating therewith and comprising a multi-part wedge member hav- .ing the parts thereof engaging, during wedging movement thereof, along a plane making an acute angle with the inclined surace of said first mentioned member, said angle being greater than the angle made by said inclined surface and the line of movement of the wedge, and said wedge having said parts relatively movable whereby said parts separate at said plane upon initial rearward movement of said wedge, and means cooperating with said parts to restore said parts automatically to contact along said plane prior to forward movement of said wedge.

In forging machine, clamping mechanism including a reciprocable member, an abutment or guide member, and wedge means cooperating therewith, said parts comprising a plurality of relatively inclined surfaces and. cooperating, during wedging action to produce a wedge action between sets of surfaces disposed at a relatively small angle to each other, and upon reverse move ment of the parts to permit initial release of the frictional lock between sets of surfaces disposed at a greater angle.

8. in a forging machine, a clamping mech anism comprising a reciprocable member, a guide member, said members having surfaces arranged at'an acute angle to each other, one of said surfaces being perpendicular to and the other at an acute angle to the line of movement of, said reciprocable member. and wedge means cooperating with said sur faces to effect clamping movement of said clamping member, said wedge means comprising a plurality of parts one of which has a surface cooperating with one of said first mentioned surfaces and the other a surface cooperating with the other thereof and each of said parts having a surface at an angle to both of said first mentioned'surfaces, said last mentioned surfaces being parallel and the angle between said last mentioned surfaces and said first mentioned inclined surface being greater than the angle between said first mentioned surfaces.

9. In a forging machine, clamping mechanism including aireciprocable member, a

reciprocating clamp operating element, said member and element having inclined surfaces cooperating to move said member on movement of said element in one direction, and means for facilitating the freeing of said surfaces upon reverse movement of said element. I v i I 10. in a forging machine, clamping mechanism including a reciprocable member, a reciprocable clamp operating element, said member and element having cooperating inclined surfaces constituting means for moving said member upon movement of said ele ment in one direction, and means reciprocable relative to said operating element for facilitating the freeing of said surfaces upon reverse movement of said element.

1.1. In aforging machine, clamping mech-' anism including a reciprocable member having an inclined surface formed thereon, a reciprocating clamp operating element having an inclined surface formed thereon, said surfaces cooperating on movement of said element in one direction to move said reciprocable member in a direction to effect clamping, and means slidably'connected to said operating element for facilitating the freeing of said surfaces upon reversal of said element. i

12. Clamping mechanism comprising, in combination, a reciprocable member, an abutment member, there'being wedge engaging surfaces formed on said members and arranged at an angle to each other, and wedge means cooperating with said member including a wedge member movable in a path parallel to one of said surfaces and having an inclined surface engageable with the other of said first mentioned surfaces, and auxiliary wedging means controlled by said Wedge member and cooperating therewith during wedging movement of said Wedge member to render the wedging action of the latter equivalent to that of a wedge whose angle is equal to the angle between the inclined surface of said wedge member and the direction of movement thereof while facilitating release of said wedge member by permitting initial withdrawal movement of said wedge to be accompanied by release of the wedge action along surfaces disposed at a greater angle.

13. Clamping mechanism comprising, in combination, a reciprocable member, an abutment member, there being wedge engaging surfaces formed on said member and arranged at an angle to each other, and wedge means cooperating with said members including a wedge member movable in a path parallel to one of said surfaces and having an inclined surface engageable with the other of said first mentioned surfaces, and auxiliary wedging means applied and released by said wedge member and co-operating therewith during .wedging movement of said wedge member to render the wedging action of the latter equivalent to that of a. wedge whose angle is equal to the angle between the inclined surface of said wedge member and the direction of movement thereof while facilitating release of said wedge member by permitting initial withdrawal movement of said wedge to be accompanied by release of the wedge action along surfaces disposed at a greater angle.

14. In a forging machine, clamping mechanism including a reciprocable member having an inclined surface thereon, an operating member having an inclined surface engageable with said first mentioned surface, and cooperating wedging means movable relative to said operating member as the latter is moved in one direction whereby the frictional engagement of said surfaces due to their wedging action may be more readily released.

15. In a forging machine, clamping mechanism including a reciprocable member having an inclined surface thereon, an operatmg member having an inclined surface en gageable with said first mentioned surface, and resiliently connected coope ating wedging means controlled by said operating member and movable with said operating member during wedging action as a unitary wedge of less angle than said operating member'but permitting release of said operating member independently thereof.

16. In a clamping mechanism, a reciprocable member, an abutment member, said members presenting opposed surfaces arranged at one angle to each other, and means for effecting movement of said reciprocable member relative to said abutment member including wedge means cooperating with said surfaces and comprising a plurality of relatively movable members, one engaging one of said first mentioned members and the other the other and engaging with each other along a surface of contact which lies at an angle to both of said first mentioned surfaces.

17. In a forging machine, clamping mechanism including a reciprocable member, means including a wedge for moving said member in one direction, and cooperating means for moving said member in the opposite direction, said last named means having a resilient connection with said reciprocable member. I

18. In a forging machine, clamping mecha nism including a reciprocable member, means including a wedge for moving said member in one direction, a lever controlled by said wedge adapted to move said member in the opposite direction, and a resilient connection between said lever and said reciprocable member.

19. In a forging machine, clamping mechanism including a reciprocable member, means including a wedge for moving said member in one direction, a lever adapted to cause reverse movement of said member and controlled by said wedge, and a resilient connection between said lever and said reciprocable member including a resiliently mounted plunger carried by said movable member.

20. I11 a forging machine, clamping mechanism including a reciprocable member, means for moving the same in one direction including an operating member movable at right angles thereto, and means for moving the same in the opposite direction including a bell crank lever engageable with said member and intern'iittently engageable with said last mentioned means.

21. In a forging machine, clamping mechanism including a reciprocable member, means for moving the same in one direction including an operating element movable at right angles thereto, and means for moving the same in the opposite direction relative to which said element has a limited independent movement and itself having a limited independent movement relative to said member.

22. In a forging machine, clamping mechanism including a reciprocable member, means including a Wedge member for moving the same in one direction, and cooperating means for moving the same in the opposite direction engageable by said wedge member as the latter is reciprocated toward releasing position.

23. In a forging machine, clamping mechanism including a. reciprocable element haw ing a sloping surface, a cooperating wedge having a plurality of faces arranged at acute angles to each other, and a cooperating wedge member carried thereby and movable relative thereto having a surface engageable with one of the faces of said wedge.

24-. In a forging machine, clamping mechanism including a reciprocable element having a sloping surface, a cooperating wedge having a plurality of inclined faces, and a cooperating wedge member movable relative thereto having a surface engageable with one of the faces of said wedge and projections engageable with the front and rear ends of said wedge.

25. In a forging machine, clamping mechanism including a reciprocable element having a sloping surface, a cooperating wedge having a plurality of inclined faces, a cooperating wedge mcmber movable relative thereto having a surface engageable with one of the faces of said wedge and projections engageable with the front and rear ends of said wedge, and a resilient connection between said member and said wedge.

26. In a forging machine, clamping mechanism including a reciprocable element having a sloping surface, a cooperating wedge having a plurality of inclined faces, a cooperating Wedge member movable relative thereto having a surface engageable With one of the faces of said Wedge, and meansfor guiding said member and said Wedge.

27. In a forging machine, clamping mechanism including a reciprocable element having a sloping surface, a cooperating Wedge having a plurality of inclined faces, a cooperating \vedge member movable relative thereto having a surface engageable with one of the faces of said Wedge, and means for lubricating said inclined faces comprising a passage for lubricant traversing said cooperating Wedge member. a I

28. In a forging machine, clamping mecha nism including a reciprocable elementhaving a sloping surface, a cooperating wedge having a plurality of inclined faces, a cooperating Wedge member movable relative thereto having a. surface engageable with one of the faces of said Wedge, and means for lubricating said inclined faces comprising passages for lubricant traversing said cooperating Wedge member and Wedge.

29. In a forging n'1achine, a dolly carr ing member, a dolly thereon having a recess therein adapted to receive said member and a lateral opening therein con'imunicating with said recess, and a pin insertable through said opening into said recess in a predetermined position of said dolly.

30. In a forging machine, a dolly operating member, a dolly cooperating therewith, one of said elements having a recess adapted to receive the other one of said elements having a lateral opening therein, said dolly being reciprocable relative to said member, and a pin inserable through said opening after reciprocation of said dollyrelativeto said member and thereafter bodily movable with the element having said opening.

31. In a forging machine, clamping mechanism including a reciprocable member, swaging mechanism, controlling n'iechanism therefor including a movable member, upsetting mechanism, controlling mechanism for said clamping and upsetting mechanisms including a second n'iovablemember movable into interlocking relation with said first mentioned movable member, and cooperating cont-rolling mechanism controlled by said reci n'ocable member and movable into the path of said second movable member.

32. In a forging machine, clamping mechanism including a reciprocable member, swaging mechanism, controlling mechanism therefor including a movable member, upsetting n'iechanism, controlling mechanism for said. clamping and upsetting mechanisms including a second movable member 1novable into interlocking relation Withsaidl'irst mentioned mtwable member, audcoopeii-ating controlling mechanism including means flexibly connected to said reciprocable men1- ber and movable into or out of the path of said second movable member.

33. In a forging machine, clamping mechanism including a reciprocable member, swaging mechanism, controlling mechanism therefor including a pivoted member, upsetting mechanism, controlling. mechanism for said clamping and upsetting mechanisn'is including a member movable into the path of said pivoted member, and cooperating controlling mechanism pivotally connected to said reciprocable member and including a member pivotally mounted on the axis of said pivoted. member and movable into or out of the path of the member Which is movable into the path of said pivoted member.

34. In a forging machine, clamping mechanism including a reciprocable member, up; setting mechanism, controlling mechanism for said clamping and upsetting mechanisms including a movable operating member and a locking member connected thereto, swagmechanism, controlling mechanism therefor including a movable operating member movable into the path of said locking member, and cooperating controlling mechanism operatively connected to said reciprocable member and likewise movable into the path of said locking member.

35. In a forging machine, clamping, upsetting, and sWaging mechanisms, a control for said clan'lping and upsetting mechanism, a control for'said swaging mechanism, and means operable upon operative movement of said, first control to prevent operaion of said second control, said means cooperating with said clamping mechanism to prevent operation of said upsetting mechanism until the former mechanism has been fully operated.

36. In a forging machine, clamping upsetting, and swaging mechanisms, a control for said, clamping and upsetting mechanism, a control for said swaging mechanism, and means operable upon operative movement of said first control to prevent operation of said second control, and operative upon movement of said second control to prevent operation of said first control, said means cooperating with said clamping mechanism to prevent operation of said. upsetting mechanism until the former mechanism has been fully operated. Y

37. In a clamping mechanism, an abutment 'men'iber having a guiding surface, a reciprocable member having a surface in clined to said guidingsurface, and means for, elfecting movement of said reciprocable member in a direction away from said abutment member including a plurality of cooperating wedge ll'lGll'llJGlS engaging with each other along a surface making an angle with said guiding surface different from the inclination of said, surface on said reciprocable member and one havng a surface coopcrating with said guiding surface and the other a surface cooperating with said first mentioned inclined surface, said cooperating wedge members having a lost motion connection between them, and means for reciprocating said wedge members.

38. In a clamping mechanism, an abutment member having a guiding surface, a reciprocable member having a surface inclined to said guiding surface, and wedge means cooperating with said surfaces to move said reciprocable member including means for facilitating the freeing of said wedge means upon withdrawal movement thereof.

39. In a forging machine, clamping means, forging means adapted to cooperate with work held in said clamping means, and controlling mechanism for said clamping and forging means including a control lever, controlling means proper, operative connections between said controlling means proper and said control lever, a member movable on actuation of said clamping means, and means independent of said operative connections but movable with said lever cooperating with said member to provide an interlock between said clamping and forging means.

40. A forging machine comprising cooperating clamping and forging means, a control lever therefor having an actuating rod connected thereto, a member having operative connection with said clamping means, and a second member operatively connected to said lever independently of said rod and said other member and adapted to cooperate with said first mentioned member to provide an interlock between said clamping and forging means.

41. A forging machine comprising cooperating clamping and forging means, a control lever therefor, a member having operative connection with said lever, and a second member having operative connection independently of said other member with said clamping means, one of said members having a stationary pivoting point, and said members being adapted to provide an interlock between said forging and clamping means.

42. A forging machine comprising cooperating clamping and forging means, a con trol lever therefor, and means for interlocking said clamping and forging means including cooperating reciprocable and pivotal members, one of said members being operatively connected to said lever and the other operatively connected independently of said other member to said clamping means, said pivoted member having a fixed pivoting point and adapted to intersect the path of movement of said reciprocable member.

43. In a forging machine comprising clamping means and forging means operating on work clamped thereby, a control lever for both of said means, a member operatively connected to said lever, and a second member operatively connected to said clamping means and caused to be moved thereby, pivoting point, and both of said members cooperating to form an interlock between said clamping and forging means.

44. In a forging machine, power swaging, clamping and upsetting mechanism, a

controlling member for said swaging mechanism, a joint controlling member for said upsetting and clamping means, and means providing an interlock between said mechnisms including a member movable on movement of said controlling member for the upsetting and clamping means, and members each adapted to cooperate directly with said third member to control the movements thereof and respectively moved on operation of said swaging means and on operation of said clamping means.

45. In a forging machine, a movable clamping member, a controlling lever member therefor, and means for controlling one of said members including a plurality of elements and a common member directly cooperating with each of said elements.

46. In a forging machine, clamping mechanism including a movable clamping element, a controlling lever therefor, and means for controlling the latter including a plurality of controlling elements and a common controlling element directly cooperating with each of said other elements, one of said plurality of elements being controlled by the clamping mechanism.

47. In a forging machine, a movable clamping element, controlling means there for including a movable member, an element co-operating with said member and con trolled thereby and extending generally in the same direction in which said clamping element moves, and means adapted to cooperate with said controlled element and actuated by said clamping element.

48. In a forging machine, clamping mechanism including relatively movable clamping jaws, actuating means therefor, means for controlling power for said actuating means, and means including cooperating elements adapted upon relative movement to initially release the clamping pressure while the jaws are adapted to remain substantially relatively fixed, and means for thereafter separating said jaws positively.

49. In a forging machine, clamping mechanism therefor including relatively movable clamping jaws, actuating means therefor, means for initially releasing the clamping pressure thereof, and additional means actuated by said latter means for positively separating the same.

50. In a forging machine, clamping mechanism therefor including relatively movable one of said members having a fixed clamping jaws, actuating means therefor, means for initially releasing the clamping pressure thereof, additional means including relatively movable mechanically actuated elements for positively separating the same, and a common member for each of said means.

51. In a forging machine, clamping mechanism therefor including relatively movable clamping jaws, actuating means therefor, 10

means including a reciprocable member for initially releasing the clamping pressure thereof, and additional means actuated by said member for positively separating the same.

In testimony whereof I aflix my signature.

WADE H. WINEMAN. 

